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Four very long wires are arranged as sho...

Four very long wires are arranged as shown in the figure, so that their cross - section forms a square, with connections at the ends so that current I flow through all four wires. Length of each side of the formed such square is b. The magnetic field at the central point P (centre of the square) is

A

`(mu_0I)/(pib)`

B

`(2mu_0I)/(pib)`

C

0

D

`(mu_0I)/(sqrt2pib)`

Text Solution

Verified by Experts

The correct Answer is:
B
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